Hoisting sling



Oct. 21 1924.

P. WAGNER HOISTING SLING Filed April so. 1925 Patented Oct. 21, 1924.

UNITED STATES PAUL WAGNER, OF WAUWAT'OSA, WISCONSIN.

HOISTING SLING.

Application filed April 30, 1923.

To all whom it may concern Be it known that I, PAUL l/VAGNER, a citizen of the United States, residing at VVauwatosa, county of Milwaukee, and State of l/Visconsin, have invented new and useful Improvements in Hoisting Slings, of which the following is a specification.

This invention relates to improvements in slings for engine hoists.-

It is the object of this invention to produce a cheap, simple sling adapted for ready attachment to an engine for the hoisting thereof and adapted for manipulation, whereby its supporting portion may readily be brought above the centers of gravity of a plurality of different types of engines so that each engine may be maintained in stable equilibrium.

It is a further object of this invention to provide a novel fitting for use with such a hoist which will permit of the ready attachment of the hoist to an engine block in the immediate vicinity of the valves without the danger of damage thereto.

I11 the drawings Figure 1 is a side elevation of a sling embodying this invention with its strands manipulated into position for use with one type of engine.

Figure 2 is a similar view of the same de vice showing its strands manipulated into position for use with a different type of enine.

6 Figure 3 is a plan view of the sling in its Figure 1 adjustment, as it appears when applied to an engine block.

Figure & shows the sling in its Figure 2 adjustment applied to a different type of engine block from which the cylinder head has been removed.

Figure 5 is an enlarged detail view in Side elevation of the fitting through which the strands of the sling are preferably attached to an engine block, the engine valve and a fragment of the engine block being also shown.

Like parts are identified by the same reference characters throughout the several views.

In the preferred embodiment of this invention an annulus or ring 10 provides means through which the sling herein disclosed can be connected with hoisting tackle for lifting an engine. It is desired to lift each engine in such a way that it will be Serial No. 635,455.

inherently stable. Engines are ordinarily bolted to their beds and in order not to bend the attaching bolts it is very desirable that the hoist shall be applied to a point approximately above the center of gravity of each engine so that the engine will not only be stable but will remain substantially level during a hoisting operation. I have found that many different types of engines can be supported in the desired manner by a sling having three strands, two of which are'of equal length and the third of which is of different length.

I am aware that slings have heretofore been made in which three strands or chains have been used and in which one of the strands has been made in such a manner as to render it adjustable in length. I have made the discovery, however, that I can secure as good results with strands which are non-adjustable and which, therefore, require little time for manipulation and can be used with no danger of slippage or breakage.

In the accompanying drawings I have shown two strands 11 and 12 of equal length and one strand 13 which is shorter than the others. It is immaterial how these strands are made, since they may be so constructed of cable as to be as strong as the chain strands represented in the drawings.

Each of the several strands 11, 12 and 13 carries at its end a specially designed fitting 14. This fitting may conveniently comprise a short piece of metal apertured adjacent each end andbent intermediate its ends to an obtuse angle. The apertures 15 are adapted to receive the final link of the chains which comprise the several strands. The apertures 16 are adapted to receive the cap screws or bolts by means of which the engine head is ordinarily bolted to the cylinder block. Any

other cap screws or bolts about the engine may also be passed through said apertures to secure the fitting 14: to the engine for place may also be utilized upon said screws to hold fittings 14 in place. Obviously, if cap screws are used in place of screws or bolts 19, such cap screws will provide their own heads, and nuts 20 will be unessential. It is particularly to be noticed that the upwardly bent portion of fitting 14k readily clears the open valve 22 in such a way as toavoid the possibility of; injury to said valve. At the Same time the angularity of the fitting is such that the upwardly bent portion thereof corresponds quite closely to the line ofstrain through strand 18 which carries it. There is, therefore, little tendency for the fitting to become bent or broken in use.

The engine shown in Figure 4. is intended to represent an engine of a type having a magneto built into the fly-wheel'and a plan.- etary transmission.

with the engine from the vehicle and consti- 1. 11285. heavy weight; tending to throw the dine proper o-ut'of balance on its longi; tii dinal axis. In such an engine of a well known make the cap, screws which secure the cylinder head in olace are disposed subctr l tially as. indicatec in Fig, 4c and I have found that such an engine can hevery well balanced during its removal if the support ing sling herein disclosed is attached as indicated in. Fig if. The short strand 18 of the. sling is. disposed between the other two strands as shown in Fig. 2 and is extended rearwardly, The two outside strands 11 and 12. are extended to opposite sides of the motor and. the ring 10 is thereby brought to a position very close to vertical alignment above the center of gravity of the engine.

In. the. type of, engine shown. in Fig. 8 the device, issubstantially balanced but the disposition. of the studs or cap screws 1-9- which secure thecylinder head in place is such that a its several strands of equal length cannot satisfactorily be used to posiuse the annulus. or ring; 10 above the center of gnayity of the engine. I have found, howei eij, that the, sameslingwhich operates satisfactorily in. connection with the type of engine shown. in Fig. at can also be utilized to 'maintain the type of engine shown in lilig; 8 in balance during the hoisting of I said engine. It will be noted that the two center bolts 19 at the front of the engine are closer-together than the corresponding bolts 2,9. at the far side of the engine as it is viewed inFig. 8. Accordingly, the two longor strands 11 and 12 are led 'to'the two cen tcr boltswhich are farthest apart at the rear of theengine and the shorter strand 18 hasits fitting 14; secured to one of the center bolts. 19 at the front side of. the engine. The nearness of this front bolt 19 to the transverse center lineof the engine compensates for the shorter length of strandwhich The supporting housing 2-8 for these parts. is ord narily removed tioned substantially above the center of gravity of the engine block.

In order that the several strands 11, 12 13 may conveniently be extended into positions in which they are shown in Fig. 8' it is necessary to effect a readjustment of the strands from the position which they occupy when they are used on an engine of the type shown in Fig. 4. Thisreadjustment is clearly illustrated in Figures 1 and 2. Fi'gfl shows the strands in the position in which they are used in Fig. 8 and 2 shows the strands in. the position in which. they are used in- Fig. l. The structure il; lustrated makes the adjustment of the df'e vice between its two. positions shown inlligs. 1 and 2 an extremely simple matter. only necessary to slide strand 11 a counteii-clockwise directionaround the rin 10, to

change the device from its Fig. I 1QQSitifQII. Obviously, b the above described manipulation of strancfll it may be moved from one end or the seties. of strands to the other end thereof, tliliS.

to its Fig. 2 position.

causing the shortest strandf18 to occu central position instead of an end posit n. in the central position of said strand ..1's

best used upon an engine of the type shown.

in i, whereasin the end positioniof'sa, i strand it is best used on an engineor; the type shown in Fig. 8. From the foregoing it will be apparenit that although I do not actually change the length of any chain in my device, I am able byv an adjustment of a single strand; to produce an effect equivalent to achange; length of two strands. Theeil'ect pindllced equivalent to a lengthening of the, end strand off-the, series anda' shortening o-fthe strand adjacent thereto. r

it should be further noted with reference to the Fig. 8 construction thatv the cylinder head is shown to be i'n'plface. It is immaterial in the use of this devicewhether the (1 1.1;- inder head is in place upon the QnqlllQQIEIlQt. The fitting lare adaptedin either. caset receive the cap screws or bQglts 19, the. mary function of which is to secure th had inplace. V The sling here shown maybe manipulated with such case for use under Varyingcircumstances that it is; very serviceable for hoisting purposes in any shop where. heavy castings are to be lifted. In actualpracti'ce, however, the device has been found particularly useful in garage work, where the hoisting of different types of enginesfroin motor vehicles is. of common, occurrence.

one-half inches long. Themeasurem'nt 's are taken from. the upper ends, of: the chains; to the apertures 15 in each'case'. I

is led thereto and the ring 10 is thus posi- While I do not wish to limit myself to a hoist of the dimensions given, I nevertheless wish to make it clear that a sling having these particular dimensions has, in actual practice, proven very valuable for lifting many diflerent types of engines, such as are found in the vehicles most widely distributed.

It is further to be noted that the use of three strands is preferred to the use of any other number of strands. Where three strands are used the engine supported thereby will be in stable equilibrium and the load will ordinarily be divided with substantial equality between the strands. I have found it possible to stand upon any part of an engine supported by a sling of the type disclosed herein without disturbing the equilibrium of said engine.

lVhile the use of a circular frame or an nulus 10 is preferred, it will be obvious that the frame 10 might be constructed in other forms to operate with almost equal satisfaction. The principal requirement is that any of the strands such as chain 11 can be manipulated completely around the frame to the opposite end of the series of strands supported therefrom. This result would be almost as easily accomplished if the metal comprising frame 10 were bent to triangular, rectangular or oval form or, in fact, to any other closed or substantially closed figure.

I claim l. A hoisting sling including a frame, and a plurality of strands of differing lengths supported therefrom and adapted for manipulation about said frame, whereby their sequence may be changed.

2. A hoisting sling including a closed frame and three strands freely adjustable about said frame, two of said strands being of substantial equal length and the third strand being shorter than the other two.

3. A hoisting cling including a ring, one relatively short flexible strand and two relatively long flexible strands loosely connected with said ring, and an apertured fitting connected with each of said strands.

4. A hoisting sling including a frame,

three flexible strands loosely connected with said frame, and fittings connected with each strand and each comprising an obtusely angled plate provided with an aperture in one portion thereof.

5 A hoisting sling comprising an annulus, a relatively short length of chain having one of its links engaged about said annulus, two relatively longer lengths of chain each having a link engaged about said annulus, and a connecting fitting attached to each of said lengths of chain, each fitting comprising a plate having obtusely related arms each provided with apertures, one of said apertures being disposed to receive a link of the chain to which the plate is attached.

6. An engine hoisting sling including a fitting comprising two apertured arms joined at an obtuse angle, the aperture in one of said arms being adapted to receive a cylinder head bolt and the angle being such that the other of said arms will clear a valve adjacent such a bolt.

PAUL WAGNER. 

